Tupo TRX250 Top-End Rebuild Kit for Honda TRX250/Recon 68.5mm — Cylinder, Piston, Rings & Gaskets, Graphite-Coated Piston

Tupo TRX250-68.5 is a complete top-end rebuild kit engineered to replace worn cylinder, piston, rings and gaskets on Honda TRX250/Recon/Sportrax 250 models.

If your ATV is losing compression, burning oil, or showing reduced power, replacing the top-end with a matched kit restores fit and performance without hunting for individual parts. This Tupo kit groups the cylinder, piston assembly, ring set, and a full gasket set so you can rebuild the engine’s top end in one go. The components are produced to align with Honda OEM reference numbers and include a graphite-coated piston designed to lower friction.

Which Honda models does this kit fit?

The Tupo TRX250-68.5 kit is compatible with many TRX250 variants across years 2002–2024. Confirm your VIN and engine before purchase to ensure exact fit.

• Fits Honda Recon 250, TRX250, TRX250X, TRX250TE 2x4 ES and TRX250TM 2x4 models.
• Supports Sportrax/TRX250EX 2x4 models from 2003–2008.
• Designed to match OEM part families for straightforward replacement.

What parts are included and how do they match Honda part numbers?

This kit bundles the essential top-end components so you won’t need separate orders. Each piece corresponds to commonly used Honda reference numbers to simplify identification and reduce compatibility guesswork.

• Cylinder included, aligning with Honda cylinder part references (12100-HN6-000).
• Piston kit provided, compatible with piston OEM references (13101-HM8-A40).
• Piston ring set and piston pin match typical Honda part families (13011-HM8-003, 13111-425-000).
• Full gasket set included with equivalents to gasket part numbers (12191-HM8-000, 12251-HN6-000).

How does the graphite-coated piston help my ATV?

The piston features a thin graphite friction-reducing layer that lowers internal resistance and supports smoother operation. While not a performance guarantee, reduced friction can help with responsiveness and may support marginally better fuel economy under similar conditions.

• Graphite coating typically 20–30µm thick for lower surface friction.
• Can cut motion resistance and wear compared with untreated pistons.
• Helps maintain ring seating and reduce initial break-in scuffing.

Who is this for: The Tupo TRX250-68.5 Cylinder Top End Rebuild Kit is for owners, mechanics, and DIY ATV enthusiasts who need a reliable, single-source top-end replacement for Honda TRX250-series four-stroke engines. It suits people performing routine rebuilds, addressing low compression or oil consumption, or restoring an older machine to dependable running condition. Before ordering, verify your ATV’s model year and engine codes to confirm compatibility with the listed Recon and Sportrax variants.